Attachment for doors.



PATENTED AUG. 6, 1907.

C. W. SIMMONS. ATTAGHMENT'FOR DOORS.

APPLIOATIOH FILED NOV. 2, 1906.

11;: NORRIS PETERS 5a., wAsmmau, nv c.

CHARLES W. SIMMONS, OF HILLSBORO BRIDGE, NEW HAMPSHIRE.

ATTACHMENT Fonlnoons.

Specification of Letters Patent.

Patented Aug. 6, 1907.

Application filed November 2, 1906. Serial No. 341,776.

To all whom it may concern:

Be it known that I, CnARLEs W. SIMMONS, a citizen of the United States, residing at Hillsboro Bridge, in the county of Hillsboro and State of New Hampshire, have invented anew and useful Attachment for Doors, of which the following is a specification.

This invention relates to an attachment to be applied to screen or other doors for the purpose of producing an agitation of the air when the door is opened or closed so as to prevent or lessen the passage of flies and other insects through the door at such times.

The invention in its preferred form includes a plurality of fans for this purpose mounted on the door at any desired places and means by which both of these fans may be operated simultaneously or either of them may be operated alone.

It also includes means for turning the fans when the door is opened in such a way as to furnish a spring for the door to assist in closing the same, thereby avoiding the necessity of using the ordinary spring with which doors often are provided.

Further objects and advantages of the invention will appear in the course of this specification.

Reference is to be had to the accompanying drawings in which,

Figure 1 is a front elevation of a door equipped with a preferred form of my improved attachment. Fig. 2 is a sectional view of the same on the line 22 of Fig. 1 showing a part of the roller in section. Fig. 3 is a fragmentary view of the lower part of the door showing the lower fan in section, and Fig. 4 is a sectional view taken on the line 44 of Fig. 2 also showing a roller which may be employed when the lower fan is used alone.

This invention is illustrated as comprising two fans, one located at the top of the door and the other near the center thereof and both provided with means whereby when the door is opened they are rotated and when the door is closed, and a spring restores them to normal position, thus rotating them in the opposite direction and assisting in closing the door. The two means for rotating the fans are preferably connected together and operated from a single connection with the casing but they may be operated independently or either one of them may be used to the exclusion of the other. The upper fan in the form shown, comprises a hollow roller 10 mounted in hearings in a pair of brackets 11. Within this roller is a spring 12 connected with the shaft 13 which has a square or angular end 130 fitting in a similar shaped opening in one of the brackets. This spring is connected with the roller so that when the latter is 1'0- tated in one direction, the spring will be wound up and -when permitted, the spring will unwind to rotate the roller in the other direction.

For the purpose of rotating the roller when the door is opened, a drum 14 is provided. In the present case,

this drum is mounted on the roller and of larger diameter than the roller so as to multiply the speed thereof. Connected to this roller is the end of a flexible connection 15, the other end of which passes through an opening 16 in the door and is fixed in stationary position to an eye 17 or the like secured to the door casing or to any other stationary object. Upon the opening of the door, it will be observed that the drum 14 recedes from the stationary end of the flexible connection and consequently the latter is unwound therefrom. This turns the roller so as to wind up the spring and when the door is allowed to close the latter operates to assist the closing action and winds up the connection 15 on the drum. I have shown a fan with which this roller is supplied, as comprising two or more arms 18 extending from the drum longitudinally of the roller and connected with its opposite end by means of rings 19 surrounding the roller. On these arms are loosely mounted vanes or flaps 20 which rotate first in one direction and then in I the other when the door is opened and closed so as to produce an agitation of the air and frighten insects away at these times. 'This roller may be located at the top of the door, as shown, or in any position at which it is desired to use it. Located at another point on the door, preferably near the center thereof, is a board or plate 21. On this is secured a stud 22 which projects therefrom and on the stud is fixed a cylinder 23 which is surrounded by a drum 24, rotatable on the stud and cylinder. A spring 25 has one end secured to the drum and the other to the cylinder and is adapted to be wound upon the former. Having one end secured to the outside of the drum is a flexible connection 26 which passes over an idler 27 journaled on the board 21 and may have its other end connected with a drum 28 secured to the roller 10 or to the drum 14. When constructed in this manner, it will be obvious that the swinging of the door and consequent rotation of the drum 14 will cause the drum 28 to rotate in the same manner and this will operate the drum 24. If desired, however, the connection 26 may be passed over an idler 29 and be secured to the connection 15 or passed independently to the eye 17, as indicated in Fig. 4, thus doing away with the drum 28. This construction may be used when the roll 10 is not desired, either in the orginal construction of the device or after it is made, whenever the roll gets out of order. If it is desired to operate the roll 10 without using the drum 24, the connection 26 may be disconnected from the drum 28 and allowed to hang idly on the drum 24.

On the drum 24 are mounted a series of arms 30 carrying vanes 31 and they may be provided with streamers 32 or other devices for thepurpose intended. It will be seen that both of the springs 12 and 25 are not only operated to rotate their respective fans, but assist in closing the door; also that either fan may be used to the exclusion of the other either in the original construction or after one of the fans becomes inoperative, if that should happen.

While I have illustrated and described a particular form of my invention in which I prefer to embody it, I am aware that many modifications may be made in same without departing from the spirit of the invention as expressed in the claims. Therefore, I do not Wish to be limited to the particular form illustrated and described but What I do claim is 1. An attachment for doors, comprising a drum, a flexible connection secured to the drum and adapted to pass over the drum and through the door and having its end secured in stationary position, a spring for turning the druln to assist in closing the door and to wind the flexible connection on the drum, arms connected with the drum at their opposite ends, and vanes on the arms movable therewith,

2. An attachment for doors, comprising a roll, a drum thereon, a flexible connection secured to the drum and adapted to pass through the door and having its end socured to a stationary object, a spring within the roll for turning the roll, a drum, and arms extending longitudinally of the roll and rotatable therewith for holding the fan vanes.

3. An attachment for doors, comprising a roll, a drum secured thereto, a flexible connection on the drum having its end secured to a stationary object, a plurality of arms extending longitudinally of the roll and having their opposite ends connected with the roll, said arms being spaced from the roll and having fan vanes thereon.

4. An attachment for doors, comprising a roll, a drum thereon, a flexible connection secured to the drum and adapted to pass through the door and having its end secured to a stationary object, a spring within the roll for turning the roll, a drum, arms extending longitudinally of the 1-011 and rotatable therewith for holding the fan vanes, said drum being of larger diameter than the roll, a second drum connected to the first drum, :1 fan connected with the second drum, and means for operating the fan simultaneously with the rotation of said roll.

5. An attachment for doors comprising a roll, a plurality of arms extending longitudinally of the roll and having their opposite ends connected therewith, said arms being spaced from the roll, fan vanes mounted on said arms, and means for rotating the roll when the door swings.

6. An attachment for doors, comprising a stud mounted upon the door, a cylinder fixed thereto, a drum rotatably mounted on said stud, a spring connected with said cylinder, fan vanes on said drum, a flexible connection secured to the drum and adapted to be wound thereon, said connection adapted to pass through the door and having its end secured in stationary position, whereby the opening of the door will cause the drum to rotate.

7. An attachment for doors, comprising a stud mounted upon a door, a cylinder fixed thereto, a drum rotatably mounted on said stud, a spring connected with said cyl inder, fan vanes on said drum, a flexible connection secured to the drum and adapted to be wound thereon, said connection adapted to pass through the door and having its end secured in stationary position, whereby the open ing of the door will cause the drum to rotate, a roller over which said flexible connection is adapted to pass, a second drum to which said flexible connection can be secured, and means for rotating said second drum when the door is opened or closed.

In testimony whereof I have hereunto set my hand, in the presence of two subscribing witnesses.

CHARLES W. SIMMONS.

Witnesses James E. Down, CHARLES S. PERRY. 

